Cord knotteb for grain binders



(No Model.) 2 Sheets-Sheet l.

A. STARK. CORD KNOTTER FOR lGRAIN BINDERS.

No. 470,454. Patented Mar. 8,1892..

2Sheets-Sheet 2.

-o model.)

A. STARK.

CORD KNOTT'ER PQR GRAIN BINDERS.

Patented Mar. 84, 1892.

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NITI-:D STATES PATENT GFFICE.

ANDREW STARK, OF oI-IIOAeO, ILLINOIS.

OoRD-KNOTTER FOR GRAIN-BINDERS.

SPECIFICATION forming part of Letters Patent No. 470,454, dated March 8, 1892.

Original application filed February 11, 1884, Serial No. 120,422. Divided and this application filed December 4, 1889. Serial No.

332,512. (No model.) j

To @ZZ whom it may concern:

Be it known that I, ANDREW STARK, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have inven ted certain new and useful Improvements in Cord-Knotters for Grain-Binders, which is fully set fort-h in the following specification, reference being had to the accompanying drawings, forming a part thereof.

In the drawings, Figure 1 is a rear elevation of the knotter and binder arm or needle, the position of the parts being that which they occupy just after the jaws have opened to'receive the cord in completing the knot. Fig. 2 is a sectional plan showing the breastplate, cord-holder, and knotter-bill, the position of the parts being that which they Ocoupy at rest and the section being made at the line 2 2 on Fig. 1. Fig. 3 is a detail plan Showing the cord-holder, knotter-bill, and the tucker and stripper and the needle, the parts being in the position occupied just before the cord is cut. Fig. e is a similar detail showing the holder and bill in their relative positions the instant after the cord is severed. Fig. 5 is a plan of the holder on a larger scale than the other figures. Fig. 6 is a section at the line 6 6 on Fig. 5. Fig. 7 is a detail front elevation.` Fig. 8 is a rear elevation of the knotter and binder arm, the position of the parts being that which they occupy just after the knotter-bill has commenced to move before the needle has retreated. Fig. 9 is a detail elevation of the nose of the slack-hook.

This application is a division of my application, Serial No. 120,422, filed February 11, 1884, and now pending in the Patent Office. In this application I design to include everything that relates to the cord-cutting devices.

A is the breast-plate.

B is the knotter-frame, to which the breastplate is secured and in which is j ournaled the vand the wall of the cup.

plunger D3, extending up through the knotterspindle and protruding from its upper end i andl controlled or held in that position bythe spring D4, reacting between the end of the spindle and the stop-nut D5at the end of the plunger, said plunger being depressed, and thereby the vibrating jaw opened, by the proj ections C2on the hub of the Wheel C coming into contact as the wheel revolves with the lever I, pivoted on the frame B and resting upon the top of the plunger and receiving the contact of the projection C2 upon its upper surface.

E is the cord-holder, which consists of an upwardly-open cup having notches E" in its upper margin to receive the cord and lugs or fianges F.2 projecting from it, whereby it receives movement from the projection C5 on the wheel C. This cup E is journaled at its center on a pivot secured to the bracket F, which is secured to and projects downwardly from the frame B. The bracket F is eX- panded at its lower end and forms a circular disk F, which fits within the cup E, and the screw F2, which is inserted up through the bottom of the cup at its center and into the bracket F by its head F20, retainsthe cup on the bracket.

G is the cord-clamp, which is a circular piece pivoted eccentrically upon the upper side of the flange F within the cup E, near enough to the wall thereof so that in one position the cord may be tightly bound between it and the wall and in the opposite position there shall be a space sufficient for a cord to pass freely between it and the wall. A coiled spring F3, one end being fastened to the eccentric clamp G and the other to the bearing of the clamp, tends to hold the latter in position to grasp the cord firmly between itself The Iianges or lugs E2 extend out far enough to be in the path of the projection C5. The cord-cutting device is a knife e4, rigid with the cup E, and therefore revolved by it, one such knife being located lat the margin of each of the notches E', the

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toward the bill, as will hereinafter appear, the knife is essentially located farther from the center of the holder than the clam p.

His the tucker and stripper. It has the spindle journaled in the knotter-frame atthe opposite side of the frame B from the knotter-bill and is actuated by means of the beveled pinion J 2, which is made fast upon the upper end of said spindle and receives motion through the beveled pinion J3, meshing with it, said pinion J3 being fixed on a short shaft which is jonrnaled horizontally in the frame B, and has atits opposite end the mutilated pinion .I-which is actuated bythe rack O3 and detached tooth C30 on the wheel C, and controlled in position by the delay-surfaces C4, co-operatin g with the delay-surfaces .T40 on theV pinion J4.

K is a-hook, which may be employed to afford slack cord, which the knotter-bill may' ktime to ca use itspoint 7c to descend between the needle and the holder-cord and hold back a-loop of cord as the needle retreats, as seen in Fig. 2, and it'is re-engaged bythe projec` tionfC6 andlifted in time to free that loop When the knotter-bill needs it. This slackhook may be utilized to insure the proper lodgment of the spool-cord in the notch of the holder when the needle retreats by providing` it with a shoulder k on the side toward the holder-cord, which `may Vengage and. depress the-latter as the hook descends.-

The operation of this mechanism is fully described in my said application, Serial No. 120,422, and I will describe here only so much of it as is material to the operation of the cutting devices.

The outer end `of the cord being held at starting between the clamp and vthe wall of` formed the loopfor the knot and the jaw having opened to receive the outer ends of the cord, theparts being in the position shown in Fig. vl, the projection C5 on the wheel C comes into contactwith one of the lugs E2 and rotates the holder E, causing the cord lying in thenotch Eto be carried over toward the openjaw, which, as the bill continues to revolve, receivesthe cord and closes upon it, thereby finishing the knot ready forcutting. Inkv this operation'the cord is drawn taut by the'hol'der, the proximate sides of the holder and knotter-bill moving in opposite directions by reason of the fact that the said-holder and bill revolve about their aXes in the same direction, whereby the holder has pulled the cord in one direction while the knotter-bill has pulled'it in another, thus both tightening the loops on the bill and straining the cord, so that it will be readily severed. At this stage the cord is drawn over the edge of the knife. Itis immaterial whether the edge of the knife is in contact with the cord during the antecedent thereb-ythe end` originally held betweenvthe clamp and the wall is released and immediately after the other end is grasped on the other side of the notch, sov that. when the cutting occurs thereis only one cord'to be severed, the other pulling out freelyfrom the notch. The point at which the cord will be cut will of course vary slightly with the te'- nacity ofthe cord and the sharpness ofthe :cutting-edge, and will also be affected somewhat by the shape of theknotter-bill, because the strain ofthe cord drawn, as described, by the contrary'motion of the holder andbill, if the bill is considerably tapered, will cause the loops to slip down on the bill-yielding cord,

Imore or less, and so prevent the cutting, because preventing theculmination of the strain until' the holder moves farther, and thereby carries the knife farther. Under the most'fayvorable conditions in these respects the cord might possibly be severed at the instant the knife is carried past the axis of the bill, and it is practically impossible 'to so arrange the parts or shape them that the cutting could loccur sooner than that.

I claim l. In combination with the knotter-bill and a revolving cord-holder having a flange notched to receive the cord, a clamp co-operating with such liange to hold the cord, mechanism which revolves the holder andthebill in opposite directions at their' proximate sides after the cord is received between the-jaws of the bill, and thereby strains the cord taut, and va knife over whose cutting-edge the cord, is

strained by such movement of the holder, whereby the rotation of the holder causesthe cutting of the cord, substantially asset forth.

2. In combination with the knotter bill and a revolving cord-holder consisting of an upright cup or ring having in its upstanding flange notches, into one of which the cord is laid by the advancing needle at each knotting operation, a knife for each such notch rigid with the holder, a clamp co-operating withthe flange to hold the cord, and mechanism which revolves the holder and the bill in opposite directions at their proximate sides after the cordis received between the jaws of the bill,

vand thereby strains the cord taut between the holder and the billand causes the Aholder to carry and press its knife against the cordto sever the same, substantiallyv as set forth.

3. lIn combination with the knotter #bill IOO IOS

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and the revolving cord-holder having a flange having notches, into one of which the cord is laid by the advancing needle at each knotting operation and having rigid with it a knife for each such notch, a clamp co-operating with the flange to hold the cord, and mechanism which revolves the holder and the `bill in opposite directions at their proximate sides after the cord is received between the jaws of the bill,

`and thereby strains the cord taut, the knife being in such position on the holder that it is carried against the cord by such movement of the holder, substantially as set forth.

4. In combination with the knetter-bill, a cord-holder consisting of an upright cup or ring having notches in its upstandng flange, in one of which the cord is laid by the advancing needle at each knotting operation and having rigid with it a knife for each such notch, a clamp co-operating with such notched flange to clamp the cord on the opposite side of the flange from the knetter-bill, and mechanism which Inoves the holder while the cord is held therein and causes it to strain the cord taut between it and the bill and in the same movement carry and press the knife against the cord to sever the same, substantially as set forth.

5. In combination with the knetter-bill, a cord-holder flange notched at the edge to receive the cord, a clamp co-operating with such notched flange to clamp the cord upon the opposite side of the flange from the knotterbill, mechanism which moves the holder while the cord is held therein and causes it to strain the cord taut between it and the bill, and a knife over whose cutting-edge the cord is strained by such movement of the holder, substantially as set forth.

6. In combination with the knetter-bill, the

revolving cord-holder having an annular flange or ringnotched to receive the cord, a

cord-clamp co-operating with such flange to clamp the cord upon the opposite side of the lian ge from the knotter-bill, mechanism which revolves the holder and bill in opposite directions at their proximate sides after the cord is received between the jaws of the bill and `thereby strains the cord taut, and a knife over whose cutting-edge the cord is strained by such movement of the holder, whereby the rotation of the holder carries the cord bodily into the open jaws of the bill and by the same movement causes the cutting of the cord, substantially as set forth.

7. In combination with the knotter-bill and the cord-holder consisting of an upwardly-open cup or flanged disk, having in its upstanding flange notches, into one of which the cord is laid by the advancing needle at each knotting operation, substantially as set forth, the clamp co-operating with the flange to hold the cord in the intervals between the notches, the mechanism which gives the knotter-bill and holder opposite motion at their proximate sides after the bill receives the cord between its jaws, whereby the cord is strain ed by such motion, and a knife rigid with the holder for each of such notches and so located with respect to the notch that it is pressed against the strained cord by said movement of the holder, the position of the clamp being such that the notch passes it and releases one edge of the cord before the knife severs the cord, whereby the knife is caused to cut only one cord, substantially as set forth.

In testimony whereof I have `hereunto set my hand, at Chicago, Illinois, in the presence of two witnesses, this 25th day of November,

ANDREW STARK. Witnesses:r

CEAS. S. BURTON, JEAN ELLIOTT. 

